Subject: Re: Suggested fix for NetBSD 1.2 kernels
To: None <metamatic!!>
From: John Dyson <>
List: tech-kern
Date: 09/27/1996 10:34:52
> On Tue, 17 Sep 1996, Jonathan Stone wrote:
> > For reference, a tidier version of the patch, which works better
> > on machines with clocks not at 100Hz (i.e., most things other
> > than i386es and sparcs), is appended at the end of this message.
> 	[...]
> I hacked this patch into the vm/vm_pageout.c source of a NetBSD/sparc 1.1
> kernel, knowing this was probably a very bad idea.  So, I'm not criticizing
> Mr Stone.  I'd just like to ask about a weird anomaly that seemingly arose
> from this patch.
> The kernel with the modified calls to tsleep() in vm/vm_pageout.c caused
> twm to coredump with a bus error most of the time.
That tells me that change is exposing another problem in the VM system.  The
original VM system from 4.4Lite(/2) hasn't been "productized."  It is
definitely ripe for someone to rework.